2 * Copyright © 2013 Intel Corporation
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5 * copy of this software and associated documentation files (the "Software"),
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
25 * \file brw_binding_tables.c
27 * State atoms which upload the "binding table" for each shader stage.
29 * Binding tables map a numeric "surface index" to the SURFACE_STATE structure
30 * for a currently bound surface. This allows SEND messages (such as sampler
31 * or data port messages) to refer to a particular surface by number, rather
34 * The binding table is stored as a (sparse) array of SURFACE_STATE entries;
35 * surface indexes are simply indexes into the array. The ordering of the
36 * entries is entirely left up to software; see the SURF_INDEX_* macros in
37 * brw_context.h to see our current layout.
40 #include "main/mtypes.h"
42 #include "brw_context.h"
43 #include "brw_defines.h"
44 #include "brw_state.h"
45 #include "intel_batchbuffer.h"
47 static const GLuint stage_to_bt_edit
[] = {
48 [MESA_SHADER_VERTEX
] = _3DSTATE_BINDING_TABLE_EDIT_VS
,
49 [MESA_SHADER_GEOMETRY
] = _3DSTATE_BINDING_TABLE_EDIT_GS
,
50 [MESA_SHADER_FRAGMENT
] = _3DSTATE_BINDING_TABLE_EDIT_PS
,
54 reserve_hw_bt_space(struct brw_context
*brw
, unsigned bytes
)
56 /* From the Broadwell PRM, Volume 16, "Workarounds",
57 * WaStateBindingTableOverfetch:
58 * "HW over-fetches two cache lines of binding table indices. When
59 * using the resource streamer, SW needs to pad binding table pointer
60 * updates with an additional two cache lines."
62 * Cache lines are 64 bytes, so we subtract 128 bytes from the size of
63 * the binding table pool buffer.
65 if (brw
->hw_bt_pool
.next_offset
+ bytes
>= brw
->hw_bt_pool
.bo
->size
- 128) {
66 gen7_reset_hw_bt_pool_offsets(brw
);
69 uint32_t offset
= brw
->hw_bt_pool
.next_offset
;
71 /* From the Haswell PRM, Volume 2b: Command Reference: Instructions,
72 * 3DSTATE_BINDING_TABLE_POINTERS_xS:
74 * "If HW Binding Table is enabled, the offset is relative to the
75 * Binding Table Pool Base Address and the alignment is 64 bytes."
77 brw
->hw_bt_pool
.next_offset
+= ALIGN(bytes
, 64);
83 * Upload a shader stage's binding table as indirect state.
85 * This copies brw_stage_state::surf_offset[] into the indirect state section
86 * of the batchbuffer (allocated by brw_state_batch()).
89 brw_upload_binding_table(struct brw_context
*brw
,
91 GLbitfield brw_new_binding_table
,
92 const struct brw_stage_prog_data
*prog_data
,
93 struct brw_stage_state
*stage_state
)
95 if (prog_data
->binding_table
.size_bytes
== 0) {
96 /* There are no surfaces; skip making the binding table altogether. */
97 if (stage_state
->bind_bo_offset
== 0 && brw
->gen
< 9)
100 stage_state
->bind_bo_offset
= 0;
102 /* Upload a new binding table. */
103 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
) {
104 brw
->vtbl
.emit_buffer_surface_state(
105 brw
, &stage_state
->surf_offset
[
106 prog_data
->binding_table
.shader_time_start
],
107 brw
->shader_time
.bo
, 0, BRW_SURFACEFORMAT_RAW
,
108 brw
->shader_time
.bo
->size
, 1, true);
110 /* When RS is enabled use hw-binding table uploads, otherwise fallback to
113 if (brw
->use_resource_streamer
) {
114 gen7_update_binding_table_from_array(brw
, stage_state
->stage
,
115 stage_state
->surf_offset
,
116 prog_data
->binding_table
119 uint32_t *bind
= brw_state_batch(brw
, AUB_TRACE_BINDING_TABLE
,
120 prog_data
->binding_table
.size_bytes
,
122 &stage_state
->bind_bo_offset
);
124 /* BRW_NEW_SURFACES and BRW_NEW_*_CONSTBUF */
125 memcpy(bind
, stage_state
->surf_offset
,
126 prog_data
->binding_table
.size_bytes
);
130 brw
->ctx
.NewDriverState
|= brw_new_binding_table
;
133 if (brw
->use_resource_streamer
) {
134 stage_state
->bind_bo_offset
=
135 reserve_hw_bt_space(brw
, prog_data
->binding_table
.size_bytes
);
138 OUT_BATCH(packet_name
<< 16 | (2 - 2));
139 /* Align SurfaceStateOffset[16:6] format to [15:5] PS Binding Table field
140 * when hw-generated binding table is enabled.
142 OUT_BATCH(brw
->use_resource_streamer
?
143 (stage_state
->bind_bo_offset
>> 1) :
144 stage_state
->bind_bo_offset
);
150 * State atoms which upload the binding table for a particular shader stage.
154 /** Upload the VS binding table. */
156 brw_vs_upload_binding_table(struct brw_context
*brw
)
158 /* BRW_NEW_VS_PROG_DATA */
159 const struct brw_stage_prog_data
*prog_data
= brw
->vs
.base
.prog_data
;
160 brw_upload_binding_table(brw
,
161 _3DSTATE_BINDING_TABLE_POINTERS_VS
,
162 BRW_NEW_VS_BINDING_TABLE
, prog_data
,
166 const struct brw_tracked_state brw_vs_binding_table
= {
169 .brw
= BRW_NEW_BATCH
|
170 BRW_NEW_VS_CONSTBUF
|
171 BRW_NEW_VS_PROG_DATA
|
174 .emit
= brw_vs_upload_binding_table
,
178 /** Upload the PS binding table. */
180 brw_upload_wm_binding_table(struct brw_context
*brw
)
182 /* BRW_NEW_FS_PROG_DATA */
183 const struct brw_stage_prog_data
*prog_data
= brw
->wm
.base
.prog_data
;
184 brw_upload_binding_table(brw
,
185 _3DSTATE_BINDING_TABLE_POINTERS_PS
,
186 BRW_NEW_PS_BINDING_TABLE
, prog_data
,
190 const struct brw_tracked_state brw_wm_binding_table
= {
193 .brw
= BRW_NEW_BATCH
|
194 BRW_NEW_FS_PROG_DATA
|
197 .emit
= brw_upload_wm_binding_table
,
200 /** Upload the GS binding table (if GS is active). */
202 brw_gs_upload_binding_table(struct brw_context
*brw
)
204 /* If there's no GS, skip changing anything. */
205 if (brw
->geometry_program
== NULL
)
208 /* BRW_NEW_GS_PROG_DATA */
209 const struct brw_stage_prog_data
*prog_data
= brw
->gs
.base
.prog_data
;
210 brw_upload_binding_table(brw
,
211 _3DSTATE_BINDING_TABLE_POINTERS_GS
,
212 BRW_NEW_GS_BINDING_TABLE
, prog_data
,
216 const struct brw_tracked_state brw_gs_binding_table
= {
219 .brw
= BRW_NEW_BATCH
|
220 BRW_NEW_GS_CONSTBUF
|
221 BRW_NEW_GS_PROG_DATA
|
224 .emit
= brw_gs_upload_binding_table
,
228 * Edit a single entry in a hardware-generated binding table
231 gen7_edit_hw_binding_table_entry(struct brw_context
*brw
,
232 gl_shader_stage stage
,
234 uint32_t surf_offset
)
236 assert(stage
< ARRAY_SIZE(stage_to_bt_edit
));
237 assert(stage_to_bt_edit
[stage
]);
239 uint32_t dw2
= SET_FIELD(index
, BRW_BINDING_TABLE_INDEX
) |
240 (brw
->gen
>= 8 ? GEN8_SURFACE_STATE_EDIT(surf_offset
) :
241 HSW_SURFACE_STATE_EDIT(surf_offset
));
244 OUT_BATCH(stage_to_bt_edit
[stage
] << 16 | (3 - 2));
245 OUT_BATCH(BRW_BINDING_TABLE_EDIT_TARGET_ALL
);
251 * Upload a whole hardware binding table for the given stage.
253 * Takes an array of surface offsets and the number of binding table
257 gen7_update_binding_table_from_array(struct brw_context
*brw
,
258 gl_shader_stage stage
,
259 const uint32_t* binding_table
,
264 assert(stage
< ARRAY_SIZE(stage_to_bt_edit
));
265 assert(stage_to_bt_edit
[stage
]);
267 BEGIN_BATCH(num_surfaces
+ 2);
268 OUT_BATCH(stage_to_bt_edit
[stage
] << 16 | num_surfaces
);
269 OUT_BATCH(BRW_BINDING_TABLE_EDIT_TARGET_ALL
);
270 for (int i
= 0; i
< num_surfaces
; i
++) {
271 dw2
= SET_FIELD(i
, BRW_BINDING_TABLE_INDEX
) |
272 (brw
->gen
>= 8 ? GEN8_SURFACE_STATE_EDIT(binding_table
[i
]) :
273 HSW_SURFACE_STATE_EDIT(binding_table
[i
]));
280 * Disable hardware binding table support, falling back to the
281 * older software-generated binding table mechanism.
284 gen7_disable_hw_binding_tables(struct brw_context
*brw
)
286 if (!brw
->use_resource_streamer
)
288 /* From the Haswell PRM, Volume 7: 3D Media GPGPU,
289 * 3DSTATE_BINDING_TABLE_POOL_ALLOC > Programming Note:
291 * "When switching between HW and SW binding table generation, SW must
292 * issue a state cache invalidate."
294 brw_emit_pipe_control_flush(brw
, PIPE_CONTROL_STATE_CACHE_INVALIDATE
);
296 int pkt_len
= brw
->gen
>= 8 ? 4 : 3;
298 BEGIN_BATCH(pkt_len
);
299 OUT_BATCH(_3DSTATE_BINDING_TABLE_POOL_ALLOC
<< 16 | (pkt_len
- 2));
305 OUT_BATCH(HSW_BT_POOL_ALLOC_MUST_BE_ONE
);
312 * Enable hardware binding tables and set up the binding table pool.
315 gen7_enable_hw_binding_tables(struct brw_context
*brw
)
317 if (!brw
->use_resource_streamer
)
320 if (!brw
->hw_bt_pool
.bo
) {
321 /* We use a single re-usable buffer object for the lifetime of the
322 * context and size it to maximum allowed binding tables that can be
323 * programmed per batch:
325 * From the Haswell PRM, Volume 7: 3D Media GPGPU,
326 * 3DSTATE_BINDING_TABLE_POOL_ALLOC > Programming Note:
327 * "A maximum of 16,383 Binding tables are allowed in any batch buffer"
329 static const int max_size
= 16383 * 4;
330 brw
->hw_bt_pool
.bo
= drm_intel_bo_alloc(brw
->bufmgr
, "hw_bt",
332 brw
->hw_bt_pool
.next_offset
= 0;
335 /* From the Haswell PRM, Volume 7: 3D Media GPGPU,
336 * 3DSTATE_BINDING_TABLE_POOL_ALLOC > Programming Note:
338 * "When switching between HW and SW binding table generation, SW must
339 * issue a state cache invalidate."
341 brw_emit_pipe_control_flush(brw
, PIPE_CONTROL_STATE_CACHE_INVALIDATE
);
343 int pkt_len
= brw
->gen
>= 8 ? 4 : 3;
344 uint32_t dw1
= BRW_HW_BINDING_TABLE_ENABLE
;
345 if (brw
->is_haswell
) {
346 dw1
|= SET_FIELD(GEN7_MOCS_L3
, GEN7_HW_BT_POOL_MOCS
) |
347 HSW_BT_POOL_ALLOC_MUST_BE_ONE
;
348 } else if (brw
->gen
>= 8) {
352 BEGIN_BATCH(pkt_len
);
353 OUT_BATCH(_3DSTATE_BINDING_TABLE_POOL_ALLOC
<< 16 | (pkt_len
- 2));
355 OUT_RELOC64(brw
->hw_bt_pool
.bo
, I915_GEM_DOMAIN_SAMPLER
, 0, dw1
);
356 OUT_BATCH(brw
->hw_bt_pool
.bo
->size
);
358 OUT_RELOC(brw
->hw_bt_pool
.bo
, I915_GEM_DOMAIN_SAMPLER
, 0, dw1
);
359 OUT_RELOC(brw
->hw_bt_pool
.bo
, I915_GEM_DOMAIN_SAMPLER
, 0,
360 brw
->hw_bt_pool
.bo
->size
);
366 gen7_reset_hw_bt_pool_offsets(struct brw_context
*brw
)
368 brw
->hw_bt_pool
.next_offset
= 0;
371 const struct brw_tracked_state gen7_hw_binding_tables
= {
374 .brw
= BRW_NEW_BATCH
,
376 .emit
= gen7_enable_hw_binding_tables
382 * State atoms which emit 3DSTATE packets to update the binding table pointers.
387 * (Gen4-5) Upload the binding table pointers for all shader stages.
389 * The binding table pointers are relative to the surface state base address,
390 * which points at the batchbuffer containing the streamed batch state.
393 gen4_upload_binding_table_pointers(struct brw_context
*brw
)
396 OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS
<< 16 | (6 - 2));
397 OUT_BATCH(brw
->vs
.base
.bind_bo_offset
);
398 OUT_BATCH(0); /* gs */
399 OUT_BATCH(0); /* clip */
400 OUT_BATCH(0); /* sf */
401 OUT_BATCH(brw
->wm
.base
.bind_bo_offset
);
405 const struct brw_tracked_state brw_binding_table_pointers
= {
408 .brw
= BRW_NEW_BATCH
|
409 BRW_NEW_GS_BINDING_TABLE
|
410 BRW_NEW_PS_BINDING_TABLE
|
411 BRW_NEW_STATE_BASE_ADDRESS
|
412 BRW_NEW_VS_BINDING_TABLE
,
414 .emit
= gen4_upload_binding_table_pointers
,
418 * (Sandybridge Only) Upload the binding table pointers for all shader stages.
420 * The binding table pointers are relative to the surface state base address,
421 * which points at the batchbuffer containing the streamed batch state.
424 gen6_upload_binding_table_pointers(struct brw_context
*brw
)
427 OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS
<< 16 |
428 GEN6_BINDING_TABLE_MODIFY_VS
|
429 GEN6_BINDING_TABLE_MODIFY_GS
|
430 GEN6_BINDING_TABLE_MODIFY_PS
|
432 OUT_BATCH(brw
->vs
.base
.bind_bo_offset
); /* vs */
433 if (brw
->ff_gs
.prog_active
)
434 OUT_BATCH(brw
->ff_gs
.bind_bo_offset
); /* gs */
436 OUT_BATCH(brw
->gs
.base
.bind_bo_offset
); /* gs */
437 OUT_BATCH(brw
->wm
.base
.bind_bo_offset
); /* wm/ps */
441 const struct brw_tracked_state gen6_binding_table_pointers
= {
444 .brw
= BRW_NEW_BATCH
|
445 BRW_NEW_GS_BINDING_TABLE
|
446 BRW_NEW_PS_BINDING_TABLE
|
447 BRW_NEW_STATE_BASE_ADDRESS
|
448 BRW_NEW_VS_BINDING_TABLE
,
450 .emit
= gen6_upload_binding_table_pointers
,